Geoege kelly



(Model.)

G. KELLY.

NoN-GUNDUGTING GOVBRING.

No. 218,559. Patented May 29,1883.

ATTEST: T TNVENTOREl MMM? N. PETERS4 Pnowmhugnphev, wmingtun, D 4,

UNITED STATES PATENT OEEICE.

' GEOEGE KELLY, OE oHiOAGo, ILLINOIS, AssiGNOE TO THE KELLY soEOLL SECTION MANUFACTURING COMPANY.

NoN-coNDuei-ING OovEmNG.

sri-icrrlcA'rioN forming para Orietta-s Patent No. 278,559, dated May 29, 188e. .Appiieanon and January 20,1883. (Modem 1o all whom itmag/ concern.-

Be it known that I, GEORGE KELLY, a citizen of the United States, and a resident of Chicago, in the county of Cookand'State of Illinois, have invented certain new and useful Improvements in Non-Conducting Coverings; and I do hereby declare that the following is a f ull, clear, and exact description of the saine, reference being had to the accompanying drawings, forming part of this specification.`

This invention relates to certain improvements in that particular class of non-conducting coverings foche-ating and cooling' pipes and surfaces known to the art as mineral- Wool covering and my improvementhas for its objects, tirstto ali'ord means for securing the two abutting ends togetherwhere the covering is used` in such a manner thatadjacent ends meet;` and, second, to furnish means for readily and cheaply forming an air-space between the covering and the pipe or surface to which it is applied. I attain these objects by the construction and arrangement of parts s illustrated in the Vaccompanying drawings, in

Which f s Figure 1 isV a` perspective View of my iming mypreferred mode oi' forming a single- 3,21. detail section of a double layer of the t same; and Fig.,4,a cross-sectioiiillustrat- `ing the meansleinployed forforming anairspace arounda pipe. n

. Ininyimprovenient I arrange the body B,

i of loose mineral wool,between, one or more t sheets,lA, of paper, canvas,or other flexible fee material, having firstimade the innersides of said sheets adhesive-by a coating,`rt, of suitable cement,` preferably soluble glass.` When the'two sheets, A, of inclosingrmaterial are l broughttogether over a layer, B, of mineral wool, the same will adhere to theadhesive coatingot` on said sheets and beheld between the same in avery perfect mannen Where a covering of unusual thickness is` required two 'or more layers, B, ofthe mineralwool are used, and in such case the inner sheet, A, of the material will be coated with adhesive coating a, on both sides,as clearly shbwninFig. 3. s Ininanufacturingmy improved covering I s prefer totake a single sheet of paper of more than double the lengthof the layer of mineral wool, and after applying the adhesivev coating a,I make a small-fold,a,of the paper over one end of the layer of wool. I then fold at a2 the paper over the top of the layer of` wool, as clearly-indicated in Fig. 2. The end of the top layer of paper is made of sufficient length to extend past the end of the finished covering and form anoverlap,c3, for use in securing the ends of the covering together, when the saine is bent into a circle and usedas a pipevcovering, as shown in Fig. l, or to lap-joints when the covering is used on dat or other shaped surfaces. This mode of construction is specially applicable for forming pipe-coverings, in that it leaves alongitudinall opening along the side ofthe covering to permit of its being placed around the pipe. Heretofore in this class of coverings such opening was formed by cutting through the coveringsection after it had been completed in a closed state.

In order to vproduce an air-space around the pipe C, I provide staples c, the connecting- `bars of which are bent down in order to form slinken bearing-.bars c. These staples are driven into the interior surface of the covering, so as to Vform inward projections, which hold the covering away from the pipe or other surface covered, and thereby the desired airspace between the two is attained, the sunken bearing-bar c] acting to prevent the staples from being driven too far into the body ofthe covering.

Having thus fully described my said invention, what Iclaimas my invention,and desire to s 9o y secure by Letters Patent, is

l. In a non-conducting covering,-the casing A, formed with small fold a and main fold a2, substantially as described, and for the purpose set forth.

2. fIn a non-conducting covering, the casing A, formed with small fold a', main fold ci, and an overlap, a3, substantially as described, and for the purpose fset forth.

3. The combination, with a non-conducting .,oovering, of a staple or staples c, having sunken bearing-bars c', as described, and for the purpose set forth. Y GEORGE KELLY.

Witnesses:`

ROBERT BURNS, A. CAMPBELL. 

